| 液—液循环流化床液滴形成特性研究 |
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| 引用本文： | 梁坤峰,高春艳,王林.液—液循环流化床液滴形成特性研究[J].农业机械学报,2011,42(8):228-234. |
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| 作者姓名： | 梁坤峰 高春艳 王林 |
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| 作者单位： | 1. 河南科技大学车辆与动力工程学院,洛阳,471003
2. 河南科技大学规划与建筑工程学院,洛阳,471003 |
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| 基金项目： | 国家自然科学基金资助项目(50906021);河南省科技攻关资助项目(102102210162);河南省自然科学研究计划资助项目(2009A470002) |
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| 摘 要： | 基于图像采集与处理方法对液-液循环流化床液滴形成特性进行了实验研究,提出了形成液滴的3种液-液雾化方式,考察了液-液雾化方式与射流长度脉动、液滴粒径分布的相关性,获得了液-液雾化方式的转变规律以及雾化强度、射流长度脉动和液滴粒径分布基于相对雷诺数的变化规律.结果表明,雾化过程与相对雷诺数密切相关,随着相对雷诺数的增加,雾化强度持续增强,液-液雾化方式由滴流型向层流射流型转变,最后发展为湍流射流型；在整个相对雷诺数实验范围内,射流长度的脉动表现出随机和非周期的特点,其标准方差与平均值的变化规律基本一致,在相对雷诺数为1.3×104时达到最大值；液滴的粒径分布参数一直增大到湍流射流型雾化阶段,在相对雷诺数为2.5 ×104时,液滴的粒径均匀性最好,而液滴平均粒径总体上随相对雷诺数的增大不断减小,形成液滴的最小平均粒径发生在湍流射流型雾化阶段.
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| 关 键 词： | 流体冰 液-液循环流化床 液-液雾化 液滴形成特性 射流 |
Drop Formation Characteristic of Liquid-liquid Circulating Fluidized Bed |
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| Liang Kunfeng,Gao Chunyan and Wang Lin.Drop Formation Characteristic of Liquid-liquid Circulating Fluidized Bed[J].Transactions of the Chinese Society of Agricultural Machinery,2011,42(8):228-234. |
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| Authors: | Liang Kunfeng Gao Chunyan and Wang Lin |
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| Institution: | Henan University of Science and Technology;Henan University of Science and Technology;Henan University of Science and Technology |
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| Abstract: | Drop formation characteristic of liquid-liquid circulating fluidized bed(LLCFB) were experimentally studied by means of image gathering and processing.Three typical liquid-liquid atomization forms related to drop formation were defined.The relativity was investigated between liquid-liquid atomization forms and jet length fluctuation or drop size distribution,and the change rules of liquid-liquid atomization forms,jet break-up intensity,jet length fluctuation and drop size distribution were obtained with the... |
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| Keywords: | Fluid ice Liquid-liquid circulating fluidized bed Liquid-liquid atomization Drop formation characteristic Jet |
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